IBHRE CEPS Exam Questions with
Correct Answers
Ohm's law equation - ANSWERSV=IR
EKG monitored patient should be __________, monitor chassis should be
___________ (nonconductive). Why - ANSWERSungrounded, grounded. Grounded
patient would be able to conduct leakage currents. we dont want this
lb to kg - ANSWERS2.2 lb = 1 kg
F to C - ANSWERSC=5/9(F-32)
C to F - ANSWERSF=9/5C+32
3 things that change automaticity of automatic cells - ANSWERS1. slope of phase 4
2. Change of threshold potential
3. Change of resting membrane potential
a systole is represented by what portion of the ECG - ANSWERSQT interval
What is main ion transfer during systole - ANSWERSK+ seeps out, Ca2+ enters
At rest, what is intracellular/extracellular environment - ANSWERSinside negative,
outside positive
What phase of AP is resting membrane potential - ANSWERSphase 4
Nodal depolarization occurs via what channel - ANSWERSCa2+ slow channel
Cardiac muscle cell depol occurs via what channel - ANSWERSNa+ fast channel
During which phases is cell refractory - ANSWERS1,2,3
TDP caused by what mechanism usually - ANSWERSEAD's (triggered activity)
Variance - ANSWERSTake each number in sample, subtract each number from mean,
square each difference, add all, divide sum by number in sample -1
Standard deviation - ANSWERSsquare root of variance
P value - ANSWERSProbability of certainty / smaller p value means the more likely the
result could not occur by chance
, survival curve showing % of patients surviving treatment over time - ANSWERSKaplan -
Meier curves
when measuring EGM's, earliest atrial activation usually from _____ and earliest
ventricular usually from ______ - ANSWERSP wave / QRS
Morady maneuver is used to differentiate - ANSWERSdifferentiate AT from
AVNRT/AVRT
Most common arrhythmia - ANSWERSAF
Most common SVT - ANSWERSAVNRT
What type of single use devices can be resterilized and why? - ANSWERSDiagnostic
EP electrodes because lumen and technically not a catheter because no lumen
Fr to mm - ANSWERS1 Fr = .33 mm
Tip inner diameter standard diagnostic cardiac catheters and why - ANSWERS.038 inch
/ because it is supposed to be used with .035-.038 inch guide wires
What is 2 rules for CMC's like spiral or lasso - ANSWERS1. Only approved for use in LA
due to chordae tendinea
2. Only rotate shaft clockwise
Stereotaxis catheters - ANSWERSHave magnets in tip for maneuverability in response
to changes in magnetic field
What system remotely steers guided catheters - ANSWERSHansen robotic system
ACT for using array - ANSWERSACT 250-300
bipolar cardiac electrodes record local _________ that occur during phase _______ -
ANSWERSdepolarizations / phase 0
surface EKG leads usually filtered at what - ANSWERS.1 - 100 Hz
Normal EGM filter settings - ANSWERS30 - 300 Hz
What to do if T waves interfere with A/V and why - ANSWERSIncrease the high pass
filter because T waves are lower frequency as well as far field
Unipolar filter setting - ANSWERS.05 - 300 Hz
Correct Answers
Ohm's law equation - ANSWERSV=IR
EKG monitored patient should be __________, monitor chassis should be
___________ (nonconductive). Why - ANSWERSungrounded, grounded. Grounded
patient would be able to conduct leakage currents. we dont want this
lb to kg - ANSWERS2.2 lb = 1 kg
F to C - ANSWERSC=5/9(F-32)
C to F - ANSWERSF=9/5C+32
3 things that change automaticity of automatic cells - ANSWERS1. slope of phase 4
2. Change of threshold potential
3. Change of resting membrane potential
a systole is represented by what portion of the ECG - ANSWERSQT interval
What is main ion transfer during systole - ANSWERSK+ seeps out, Ca2+ enters
At rest, what is intracellular/extracellular environment - ANSWERSinside negative,
outside positive
What phase of AP is resting membrane potential - ANSWERSphase 4
Nodal depolarization occurs via what channel - ANSWERSCa2+ slow channel
Cardiac muscle cell depol occurs via what channel - ANSWERSNa+ fast channel
During which phases is cell refractory - ANSWERS1,2,3
TDP caused by what mechanism usually - ANSWERSEAD's (triggered activity)
Variance - ANSWERSTake each number in sample, subtract each number from mean,
square each difference, add all, divide sum by number in sample -1
Standard deviation - ANSWERSsquare root of variance
P value - ANSWERSProbability of certainty / smaller p value means the more likely the
result could not occur by chance
, survival curve showing % of patients surviving treatment over time - ANSWERSKaplan -
Meier curves
when measuring EGM's, earliest atrial activation usually from _____ and earliest
ventricular usually from ______ - ANSWERSP wave / QRS
Morady maneuver is used to differentiate - ANSWERSdifferentiate AT from
AVNRT/AVRT
Most common arrhythmia - ANSWERSAF
Most common SVT - ANSWERSAVNRT
What type of single use devices can be resterilized and why? - ANSWERSDiagnostic
EP electrodes because lumen and technically not a catheter because no lumen
Fr to mm - ANSWERS1 Fr = .33 mm
Tip inner diameter standard diagnostic cardiac catheters and why - ANSWERS.038 inch
/ because it is supposed to be used with .035-.038 inch guide wires
What is 2 rules for CMC's like spiral or lasso - ANSWERS1. Only approved for use in LA
due to chordae tendinea
2. Only rotate shaft clockwise
Stereotaxis catheters - ANSWERSHave magnets in tip for maneuverability in response
to changes in magnetic field
What system remotely steers guided catheters - ANSWERSHansen robotic system
ACT for using array - ANSWERSACT 250-300
bipolar cardiac electrodes record local _________ that occur during phase _______ -
ANSWERSdepolarizations / phase 0
surface EKG leads usually filtered at what - ANSWERS.1 - 100 Hz
Normal EGM filter settings - ANSWERS30 - 300 Hz
What to do if T waves interfere with A/V and why - ANSWERSIncrease the high pass
filter because T waves are lower frequency as well as far field
Unipolar filter setting - ANSWERS.05 - 300 Hz
